From mboxrd@z Thu Jan 1 00:00:00 1970 From: Haren Myneni Subject: [PATCH 2/5] crypto/nx: Create nx842_cfg_crb function Date: Sat, 01 Apr 2017 10:00:00 -0700 Message-ID: <1491066000.29552.27.camel@hbabu-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org, benh@kernel.crashing.org, mikey@neuling.org, suka@us.ibm.com, hbabu@us.ibm.com To: herbert@gondor.apana.org.au, mpe@ellerman.id.au, ddstreet@ieee.org Return-path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:48446 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751752AbdDARAI (ORCPT ); Sat, 1 Apr 2017 13:00:08 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v31GwkoS051694 for ; Sat, 1 Apr 2017 13:00:07 -0400 Received: from e34.co.us.ibm.com (e34.co.us.ibm.com [32.97.110.152]) by mx0a-001b2d01.pphosted.com with ESMTP id 29j97eq4gp-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sat, 01 Apr 2017 13:00:07 -0400 Received: from localhost by e34.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 1 Apr 2017 11:00:06 -0600 Sender: linux-crypto-owner@vger.kernel.org List-ID: [PATCH 2/5] crypto/nx: Create nx842_cfg_crb function Configure CRB is moved to nx842_cfg_crb() so that it can be used for icswx function and VAS function which will be added later. Signed-off-by: Haren Myneni --- drivers/crypto/nx/nx-842-powernv.c | 57 +++++++++++++++++++++++++------------- 1 file changed, 38 insertions(+), 19 deletions(-) diff --git a/drivers/crypto/nx/nx-842-powernv.c b/drivers/crypto/nx/nx-842-powernv.c index 125f1dc..4cd6a6f 100644 --- a/drivers/crypto/nx/nx-842-powernv.c +++ b/drivers/crypto/nx/nx-842-powernv.c @@ -362,6 +362,40 @@ static int wait_for_csb(struct nx842_workmem *wmem, return 0; } +static int nx842_cfg_crb(const unsigned char *in, unsigned int inlen, + unsigned char *out, unsigned int outlen, + struct nx842_workmem *wmem) +{ + struct coprocessor_request_block *crb; + struct coprocessor_status_block *csb; + u64 csb_addr; + int ret; + + crb = &wmem->crb; + csb = &crb->csb; + + /* Clear any previous values */ + memset(crb, 0, sizeof(*crb)); + + /* set up DDLs */ + ret = setup_ddl(&crb->source, wmem->ddl_in, + (unsigned char *)in, inlen, true); + if (ret) + return ret; + + ret = setup_ddl(&crb->target, wmem->ddl_out, + out, outlen, false); + if (ret) + return ret; + + /* set up CRB's CSB addr */ + csb_addr = nx842_get_pa(csb) & CRB_CSB_ADDRESS; + csb_addr |= CRB_CSB_AT; /* Addrs are phys */ + crb->csb_addr = cpu_to_be64(csb_addr); + + return 0; +} + /** * nx842_icswx_function - compress/decompress data using the 842 algorithm * @@ -401,7 +435,6 @@ static int nx842_icswx_function(const unsigned char *in, unsigned int inlen, struct coprocessor_status_block *csb; struct nx842_workmem *wmem; int ret; - u64 csb_addr; u32 ccw; unsigned int outlen = *outlenp; @@ -415,33 +448,19 @@ static int nx842_icswx_function(const unsigned char *in, unsigned int inlen, return -ENODEV; } - crb = &wmem->crb; - csb = &crb->csb; - - /* Clear any previous values */ - memset(crb, 0, sizeof(*crb)); - - /* set up DDLs */ - ret = setup_ddl(&crb->source, wmem->ddl_in, - (unsigned char *)in, inlen, true); - if (ret) - return ret; - ret = setup_ddl(&crb->target, wmem->ddl_out, - out, outlen, false); + ret = nx842_cfg_crb(in, inlen, out, outlen, wmem); if (ret) return ret; + crb = &wmem->crb; + csb = &crb->csb; + /* set up CCW */ ccw = 0; ccw = SET_FIELD(CCW_CT, ccw, nx842_ct); ccw = SET_FIELD(CCW_CI_842, ccw, 0); /* use 0 for hw auto-selection */ ccw = SET_FIELD(CCW_FC_842, ccw, fc); - /* set up CRB's CSB addr */ - csb_addr = nx842_get_pa(csb) & CRB_CSB_ADDRESS; - csb_addr |= CRB_CSB_AT; /* Addrs are phys */ - crb->csb_addr = cpu_to_be64(csb_addr); - wmem->start = ktime_get(); /* do ICSWX */ -- 1.8.3.1